Blue and black only describes the color of the strip itself (not the LED). So no matter for the function.

Well, so the temperatures come from my IoBroker server. To be honest, I have not worked on my mirror for some time, but started and completed other projects.
My whole house is now controllable (lights, thermostats, speakers etc …). Among other things, I have also used temperature sensors from Xiaomi, which send their values to my server.
On the mirror I then display the values with the [MMM-iobroker] (https://github.com/ioBroker/MMM-ioBroker) module.

But I also did a lot of ESP’s. Currently have about 8 pieces in use. One controls my entire heater. One controls my bell. One evaluates my alarm system. Two are for my infinity table … etc. pp … ^^
It’s a lot of fun